135291193 has 2 divisors, whose sum is σ = 135291194. Its totient is φ = 135291192.

The previous prime is 135291137. The next prime is 135291197. The reversal of 135291193 is 391192531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98664489 + 36626704 = 9933^2 + 6052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135291193 is a prime.

It is not a weakly prime, because it can be changed into another prime (135291197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67645596 + 67645597.

It is an arithmetic number, because the mean of its divisors is an integer number (67645597).

Almost surely, 2^135291193 is an apocalyptic number.

It is an amenable number.

135291193 is a deficient number, since it is larger than the sum of its proper divisors (1).

135291193 is an equidigital number, since it uses as much as digits as its factorization.

135291193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 34.

The square root of 135291193 is about 11631.4742401813. The cubic root of 135291193 is about 513.3613584051.

The spelling of 135291193 in words is "one hundred thirty-five million, two hundred ninety-one thousand, one hundred ninety-three".